Run sed on every Rust source file in a directory (GNU):
find . -type f -name '*.rs' -exec sed -i 's/\(DataflowDesc::new(\)None/\1/' {} \;
Above for BSD:
find . -type f -name '*.rs' -exec sed -i '' 's/\(DataflowDesc::new(\)None/\1/' {} \;
Convert a Unix timestamp to a local date/time (GNU):
date -d @1571862547
Above for BSD:
date -r 1571862547
Get number of CPUs (BSD):
sysctl hw.ncpu
Check what package owns a file:
pacman -Qo `which tail`
Checkout the source for a a package:
asp checkout coreutils
Find files associated with a given package:
dpkg-query -L <package>
Renew LetsEncrypt certificate:
certbot-3.6 renew service dovecot onerestart service nginx onerestart # And whatever else you might need to restart...
Install patches:
freebsd-update fetch freebsd-update install
Blow away a bunch of stuff (caches, unused volumes, etc):
docker system prune -a && docker volume prune
Render Graphviz graph:
dot -T pdf < graph.dot > graph.pdf
Render this file:
rst2html < howtodo.rst > howtodo.html